Weighing-machine.



W. W. RDSENPIELD. WEIGHING MACHINE. APPLICATION FILED AUG. 26, 1905.

Patented Jan. #1913.

3SHEETSSHIZET 1.

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WEIGHING MACHINE. v APPLICATION FILED AUG. 26, 1905.

Patented Jan. 7, 1913.

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APPLICATION FILED AUG.2,1905. 1,049,535.

' NITED STATES PATENT ornrcn.

WILLIAM W. ROS ENFIELZD, OF NEW YORK, N. Y.

WEIGHING-MACHINE.

- Specification of Letters Patent.

I Application filed August 26, 1905. Serial No. 275,859.

Patented Jan. '7, 1913.

To all whom it may concern:

Be-it known that 1, WILLIAM W. ROSEN- r'IELo, a citizen of the UnitedStates, residing at New York city, county of New,York, 5

comes to rest 1n the position in which the beam balances.

The present invention alms to provide a beam .scale of this class whichshall be accurate and-reliable in operation, simple in construction, andnot liable toget out of order.

The invention aims further to provide a coin.or check controlled scaleof this class, such that the mechanism having made one -.weighingoperation after the insertion of a check w ll be prevented fromoperating again until after the insertion ofanother check.

A full understanding of the invention can best be given by a detaileddescription of a construction embodying all the features of theinvention in the preferred form, and such a descriptionwill now be givenin conmotion with the accompanying drawings showing such a preferredconstruction.

In said drawings: Figure 1 is a front elevation of the head orupper'part of the scale with parts shown in section. Fig. 2 is a sectionon line 2 of Fig. 1 Fig. 3 is an end elevation looking in the directionof the arrow 3 on Fig. 1 with parts in section. Fig. 4 is a section online 1 of Figs. 3 and 5. Fi 5 is a section on line 5 of Fig. 4. Fig. 61s a view of the scale beam and supporting frame shown in perspectivewith the operating mechanism of the poise, the com mechanism andelectric circuits shown diagrammatically.

Referring to the drawings, A represents the scale beam which isfulcrumed on a hearing 10 by means of knife edges 11 in the usual mannerand is connected with the platform (not shown) or other deviceforsupporting the person or article to be weighed through a connecting rod12, cross lever 13 and connecting links 14 drawing downward on reverseknife edges 15. The scale beam as shown comprises a main beam or bar, 18which carries the knife edges 11 and 15, end pieces or frames 16 and 17carried by the bar 18, and side supporting bars 19 and 20, an indicatingor scale bar 21 and a rack bar 22 extending between the end frames. The

- support-ing bars 19 and 20 are insulated from theend frames and formpart of the operating circuits, as hereinafter described.

The poise B is formed preferably of a .hollow frame or box-like casing25 within which the operating'mechanism for moving guided on the bars 19and 20 by means of supporting rolls 26 and guiding rolls 27, said rollsbeing insulated from the frame 25 for the purpose of avoiding electricalconnecbars. The poise carries an upwardly point ing indicating finger 28for indicating the weight on the scale bar 21 when the poise is inbalancing position. -Mounted in the poise frame, is a shaft 30 extendingat rightangles to the rack bar 22 and carrying a pinion 31 which mesheswith the rack bar. This shaft 30 is rotated by motor mechanism mountedwithin the poise for causing the poise to travel along the beam. Suchmotor mechanism consists,- preferably, and as shown, of two oppositelymounted electromagnets 35 and 3G, by which pawls 37 and 8S arereeiprocated to cause the shaft 30 to rotate through a wheel 39 with theperiphery of which said pawls engage, the wheel and shaft being rotatedin one direction to cause the poise to move toward the outer end of thebeam by the pawl 37, and being rotatedin the opposite direction to causethe poise to move toward the inner end of the beam by the pawl 38. Thepawls 37 and 38 are carried by armature levers 41 and 42 respectively,pivotally mounted on the shaft 30 and normally held in their retractedpositions against a stop plate 40, as shown in Fig. 4, by means of aspring 43, against the tension of which spring the armature levers aremoved by the magnets to give the pawls their forward or feedingmovements. The pawls are preferably spring pressed into position toengage with the peripheryof the the poise is located, and is supportedand t-ion between the'poise and the supporting wheel 39, as by means oflight coiled springs 44 which are mounted on the armature levers to bearlightly against the pawl. The peripheral face of the wheel 39 ispreferably formed withfine teeth or corrugations the pawls being, ofproper form to engage such corrugated face, but it will be understoodthat the invention is not to be limited to the use of pawls of the formshown and a toothed or roughened engaging surface for the pawls toengage.

In order that the rotation of the wheel 39- by either one of the pawls37or 38 when one of the armature levers is reciprocated shall not beprevented by the other of said pawls, means are provided for holding thepawls out of engagement with the periphery of the wheel 39 when thearmature levers are in their normal or retracted position. For thispurpose the pawls are provided with shoulders 2 which, when the armaturelevers are retracted engage the stop plate 40, thereby throwing thepawls upward to the position shown in Fig. 4 so as to clear theperiphery of the wheel 39. When either of the motor magnets 35 or 36 isenergized therefor to cause the corresponding armature lever toreciprocate, the rotation of the wheel 39 carried by such lever will notbe interfered with by the other pawl.

The armature lever 41 carries a contact spring 45 which, when the leveris in its normal or retracted position, engages the end of a contactscrew 47, which contact spring and screw are included in the circuit tothe ma net 35; and the armature lever 42 carries a similar contactspring 46 which, when the lever 42 is in its normal position engages theend of a contact screw 48, this contact spring and screw being includedin the circuit to the magnet 36. The contact screws 47 and 48 arecarried by insulated brackets 49 in which they are mounted so as to beadjustable toward and away from their respective contact springs, andtheir adjustment will be such that by the forward movement of thearmature lever the contact spring will be carried out of cont act withthe screw to break the circuit to the magnet in the manner customary forsecuring a rapid recipro-.

eating of the respective armatures when the circuits to the magnets areclosed.

One end of the coils of magnet 35 is in electrical connection with thesupporting bar 19 through a contact spring 51 mounted on but insulatedfrom the poise frame and which makes sliding contact with the bar 19,and one end of the coils of magnet 36 is electrically connected with thesupporting bar 20 by means of a similar contact spring 52 also carriedby and insulated from the poise frame and which makes sliding contactwith the bar 20. The other end of the coils of each of the magnets 35and 36 is in connection with one pole of the battery or other suitablesource of electrical the contact screws'47 and 48 and contact springs 45and 46 respectively, and thence through the rack bar 22, bar 18 andfulcrum 10, as shown in Fig. 6. The circuit is com= pleted to the otherpole of the batteryfrom the supporting bars 19 and 20 by means ofcontact devices controlled by the movement of the scale beam so thatwhen the beam is raised, that is, when its outer or right hand end inFig. 1 is up, the circuit to the magnet 35 will be closed, and when thebeam is depressed the circuit to the magnet 36 will be closed. For thepurpose of thus controlling the circuits to the two motor magnets, thesupporting bar 19 carries a contact device 53 which when the outer endof the scale beam is raised engages an adjustable contact 55 to closethe circuit to the magnet 35, and the supporting bar 20 carries acontact device 54 which when the outer end of the scale beam isdepressed engages an adjustable contact device 56 to close the circuitto the magnet 36. The contacts 55 and 56 are preferably formed by screwsthreaded in metallic brackets 57 and 58 carried by an insulated metallicbar 59 through which electrical con nection is made to such contacts.

The operation of the scale as so far described which will be understoodfrom the foregoing description, is briefly is follows :-Supposing thebar 59 to be in electrical connection with the fulcrum 10 energythrougli' through a battery or other suitable source of electricalenergy, and supposing the poise to be at tie zero point, that is, inposition to balance the beam when there is no weight on the platform;then, if the person or article to be weighed be placed on the platformthe outer end of the beam will be raised, thereby bringing the contacts53 and 55 together and closing the circuit to the magnet by which magnetthe armature lever 41 will be reciprocatedand the wheel 39 and shaft 30rotated through the action of the pawl 37, and the poise will move alongthe beam toward its outer end. Such movement of the poise will continueuntil it reaches a point where its weight causes the beam to swingdownward thereby raising the contact 53 away from the contact 55 andbreaking the circuit to the magnet 35, whereupon the outward movement ofthe poise will cease. If the scale beam after moving slightly downwardunder the influence of the outwardly movin poise should again rise andclose the circuit to the magnet-35 through the contacts 53 and 55, thepoise would then make a further movement outward so long as suchcontacts remained together, that is, until the beam again oscillateddownward. If, on the other hand, the poise should run beyond the position of balance beforecoming to rest, the beam would fall too far andthe circuit to balanced, position, when the pointer 28 will.

indicate on the scale bar 21 the weight of the person or article beingweighed. The poise will then remain stationary until the weight on thescale platform 'is changed or removed, and upon the removal of theweight the beamwill descend and close the circuit to the motor magnet 36through the contacts 54 and 56 and the poise will move inward on thebeam until it reaches the zero position when'the beam will be againbalanced and the circuit to both motor magnets opened. By properlyproportioning the beam and the poise and properly positioning the knifeedges 11 and 15 and adjusting the contacts 55 and 56, the poise whendriven by a reciprocating driving device in accordance with myinvention, may be made to come to rest in the position of balancewithout making any backward or reverse movement.

In a check or coin controlled scale of this class it is desirable thatthe poise shall make its automatic balancing movements onl after a checkor coin has been insert ed, and that after the person or article hasbeen weighed the scale shall be automatically prevented from operatingagain until another check is inserted. Coin controlled mechanismincluding features of the invention for securing this result is shown inthe drawings, and such mechanism will now be described.

The electrical connection between the bar 59 and the fulcrum 10 whichforms a part of the circuit. to the motor magnets 35 and 36 iscontrolled by means of a switch 0, which switch is actuated for closingthe circuit through the operation of a coin actu: ated lever 60. Theswitch as shown comprises a contact finger 61 carried by the lever and acontact spring 62 with which the finger 61 makes contact when the leveris moved to the position shown by dotted lines in Fig. 6. The leverGO ispreferably arranged horizontally, being pivoted at 3, and carries at oneend an open ended cup 63 and has its. other end extended or weighted tohold the cup 63 normally in the position shown in Fig. 1 beneath the endof the coin chute 64: so that a coin dropped from the chute will strikethe cup and tilt the lever, thereby moving the contact finger 61 intoengagement with the ing the check is preferably formed with an inclinedbottom t and an open end, as shown, so that when the lever is tilted soas to carry the coin below the edge 5 of the chute the coin will roll orfall out of the open end of the cup. In order to prevent the lever fromreturning to its normal position when the coin falls from the cup andthereby immediately breaking the circuit to the motor magnet, a latch 65is provided which when the lever 60 is tilted enters beneath a pin .66on the lever to hold the lever in its tilted position with the contactfinger 61 in engagement with the contact spring 62. To provide forretracting the latch and releasing the lever 60 when the beam'has beenbalanced by the movement of the poise, the latch is preferably carriedby a pivoted armature 67 which is moved by an electro-magnet 68 for thepurpose of retracting the latch, the energizing circuit of which magnetincludes a contact device whereby the circuit is closed when the beam isin its balanced position. Such contact device preferably consists of acontact spring 69, which is shown as mounted onbut insulated from thebar 57, and a contact finger carried by and in electrical connectionwith the, scale beam. The contact spring 69 and the contact finger 70have their engaging portions so formed and are so positioned that thecontact finger will be in engagement with the spring when and only whenthe'beam is in its bala-nced position. I

Means are preferably provided for preventing the coin lever 60from'becoming locked in its inclined position if it should be caused toswing to such position by vibration or jarring of the scale. Such meanscomprises preferably a bar or lever 7-5 piv oted to oscillate about theaxis of the lever 60 but independently thereof weighted at the same endas the lever 60 and normally held in the position shown in Fig.1 bymeans of a stop 76, so that if the scale be jarred so as to cause theoverweighted end of the lever 60 to swing upward the overweighted end ofthis bar 7 5 will also swing upward, and this bar carries a finger 7 7in position to engage the latch 65 when the overweighted end of the barswings upward, thereby preventing the latch from moving forward to enterbeneath the pin (36. Vhen, however, the lever 60 is moved by a coindropped from the chute 64 there will be no corresponding movement of thelever 75 and the latch will be free to enter beneath the pin 66 andthereby lock the lever 60 in its inclined position with the contactfinger 61 in engagement with the spring (32 to close the motor circuits.

355 spring contact 62. The cup 63 for receivranged in a box or casing 78mounted on head.

Means are preferably provided for making a signal upon the balancing ofthe beam, and for this purpose there is preferably provided a signalingdevice operated by the movement of the armature 67. Fig. 6 shows a. bell80 which is sounded by a striker 81 carried by the armature 67 so thatwhen the armature is attracted by the magnet 68 to release the coinlever 60 when the circuit to the magnet is closed by the balancing ofthe scale beam the bell will be sounded. In order that the striking ofthe bell shall occur the standard of the scales just below the .only onthe completion 'ofa weighing operation and that the movement of thescale beam to its balanced position at other times shall not cause thesignal to be made, the circuit to the magnet 68 is provided with aswitch, or circuit opening and closing device, 82, which is normallyopen, as shown in full lines in Fig. 6, and which, as by means of aconnection 83 with the coin lever 60, is closed when the coin lever 60is in the position to close the switch C, as-shown in dotted lines inFig. .1. The circuit to the magnet 68 will thus be in condition duringthe weighing operation to be closed for energizing the magnet when thecontact finger 70 is brought into engagement with the contact spring 69by thebalancing of the beam, and the armature 67 will thereby be attracted to release the-coin lever 60 and to cause the signal to be givenby the striking of the bell 80. By the return movement of the lever 60,however, the circuit to the magnet 68 will be again broken at the switch82 so that the magnet will not be energized again by the balancing ofthe beam until the coin lever 60 has been again moved preparatory toanother weighing operation. I

The-operation of the scales as a whole is briefly as follows :-The poiseB being in the position in which it was left after the last weighingoperation, and the person or article to be Weighed being on the scaleplatform, the scale beam will be raised or depressed from the positionof balance according as the weight of the person is greater or less thanthe weight corresponding to the position of the poise. If a coin be thendropped through the chute 64 it will cause the lever 60 to swing fromthe position shown in Fig. 1 and in full lines in Fig. 6 to the positionshown in dotted lines in Fig. 6, thereby carrying the contact finger 61into engagement with the contact spring 62, and moving spring 82 intoits circuit closing position, and will be locked in suchinclinedposition by means of the latch 65. The circuit will thus becompleted to one or the other of the motor magnets 35 or 36 according tothe position of the scale beam. If the scale beam is raised,for-example, the circuit will be completed to the motor magnet 85 asfollows, referring to the diagrammatic showing of the circuits in Fig.6:-

starting from the battery or other source of electrical energy S, bywire a to the fuL crum l0, thence through the scale beam 18,

rack bar 22, pinion 31 and shaft 30 to the spring 51,

armature" WVhen the beam balances the contactfinger,

70 will engage the contact spring 69 and:

circuit will be closed to the latch retracting magnet 68 as follows:starting from the battery S by wire a to the fulcrum 10, thence throughthe scale beam 18,contact 70, contact spring 69, and wire f to themagnet 68, and thence by wire 9 back to the battery.

The magnet 69 will thus be energized tomove its armature 67 and retractthe latch 65 to release the coin lever 60 and permit the latter to swingback to its normal position, thereby carrying the finger 61 away fromthe contact spring 62 and opening the operating circuit of the motormagnets. The movement of the armature 67 will also cause the signal bellto be sounded and the movement of the coin lever back'to its nor+ malposition will then open the switch 82.'

The switch C will then remain open and further automatic movement of thepoise will be prevented until the operating circuits for the motormagnets are again closed by the insertion of another coin.

If at the time the switch 0 is closed the insertion of a coin the scalebeam is depressed, the circuit will be completed to the motor magnet 36to cause the poise to'move inward along the beam, and the path of thecurrent will be the same as stated for the motor magnet 35, except thatfrom the shaft 30 the current will pass through the contact spring 46,cont-act screw 48 and wire I) to the magnet 36 and thence through wire0,-

contact spring 52, supporting bar 20 and contacts 54 and 56 to the bar59.

It will be understood that the invention is not to be limited to theexact construction and arrangement of parts as shown and to which theforegoing description has been mainly confined, but that it includeschanges and modifications thereof within the claims.

What is claimed is 1. In a self-poising beam scale, the combination withthe scale beam, of a poise movable along the beam, a motor on the poise,and areciprocating impulse imparting member actuated by said motor formoving the poise step by step along the beam, substantially asdescribed.

2. In a self-poising beam scale, the combination with the scale beam, ofa poise movable along the beam, an electric motor and connections formoving the poise along the beam, a contact device in the circuit to saidmotor controlled by the movement of the scale beam, electricallycontrolled means for opening the circuit to said motor, a circuit forsaid means, and a contact device in said circuit controlled by themovement of the scale beam to cause said electrically operated means toopen the motor circuit when the beam is balanced, substantially asdescribed.

3. In a self-poising beam scale, the com bination with the scale beam,of a poise movable along the beam, an electric motor and connections formoving the poise along the beam, a contact device in the circuit to saidmotor controlled by the movement of the scale beam, a switch in saidcircuit, an electro-magnet and connections for opening said switch, andmeans controlled by the movement of the scale beam for closing thecircuit to said magnet when the beam is balanced, substantially asdescribed.

4. In a self-poising beam scale, the combination with the scale beam, ofa poise movable along the beam, an electric motor and connections formoving the poise along the beam, a contact device in the circuit to saidmotor'controlled by the movement of the scale beam, a switch in themotor circuit, a.

retaining device for holding the switch in position to close thecircuit, an electro-magnet and connections for moving the retainingdevice to release the switch, and means controlled by the movement ofthe scale beam for closing the circuit to said magnet when the scalebeam is balanced, substantially as described.

5. In a self-poising beam scale, the combination with the'scale beam, ofa poise movable along the beam, two independent motors *on the poise, adriving pawl reciprocated by one of said motors for moving the poisealong the beam in one direction, a second driving pawl reciproca ted bythe other ofsaid motors for moving the poise along the beam in the otherdirection, means with Whichthe pawls co-act to effect the move-" ment ofthe poise, and means whereby interference by either of said pawls withthe.

movement of the poise by the other of said pawls will be avoided,substantially as described.

6. In a self-poising beam scale, the combination with the scale beam, ofa poise movable along the beam, two independent motors on the poise, areciprocating impulse imparting member actuated by one of said motors.for moving the poise along the beam in one direction, a secondreciprocating impulse im parting member actuated by the other of saidmotors for moving the poise along the beam in the other direction, meanswith which said impulse imparting members coactto effect the movement ofthe poise, and means whereby interference by either of said impulseimparting members with the movement of the poise by the other of saidimpulse imparting members will be avoided, substantially as described.

7. Ina self-poising beam scale, the com bination with the scale beam, ofa-poise movable along the beam, motor mechanism carried by the poise formoving the poise along thebeam including a pair of oppositely actingdriving pawls and means coacting therewith for moving the poise inopposite directions, means for reciprocating said pawls independently,and means for holding either of said pawls in an inoperative positionwhile the other of said pawls is being reciprocated to move the poise,substantially as described.

8. In a self-poising beam scale, the combination with the scale beam, ofa poise mGvable along the beam, motor mechanism carried by the poise formoving the poise along the beam including a pair of oppositely actingdriving pawls and means co-acting 'therewith for moving the poise inopposite directions, means for reciprocating said pawls independently,and means for engaging and raising the pawls when in their normal orretracted position, substantially as described.

9. In a self-poising beam scale, the combination with the scale beam, ofa poise movable along the beam, a rotary member carried by the poise,connections betwcen'the rotary member and the beam whereby rotation ofsaid member auses the poise to move along the beam, a wheel on saidrotary member, a pair of oppositely acting driving pawls for rotatingsaid rotary member in opposite directions by engagement with said wheel,means for reciprocating said pawls independently, and means for engagingsaid pawls when in their normal or retracted position to hold them outof engagement with said wheel, substantially as described.

10. In a self-poising beam scale, the combination with .the scale beam,of a poise movable along the beam, means for auto matically moving thepoise to balancing position including an electric motor, an oscillatinglever, means carried by said lever for closing the circuit to said motorwhen the lever is swung out of normal position, a retaining device forholding said lever in position to close the circuit, and means forpreventing the retaining device from operating to hold the lever whenthe latter caused to swing into its'circuit closing position by themovement of the parts which 39 through whichthe support the lever, saidmeans comprising a bar 75 arranged to swing with the lever and carryinga stop 76 adapted to engage the retaining device, substantially asdescribed.

11. In a self-poising beam scale, the combination with the scale beam,of a poise movable along the beam, an electric motor and connections formoving the poise along the beam, a contact device in the circuit to saidmotor controlled by the movement of the beam to open the circuit whenthe beam moves toward its balanced position, a normally opened switch insaid circuit, means for closing said switch, electrically operated meansfor opening said switch, and

a contact device controlled by the movement of the scale beam forclosing circuit to said electrically operated means when the poise is inits-balanced position, substantially as described.

12. In a self-poising beam scale, the combination with the scale beam,of a poise movable along the beam, a pair of reciprocatingelectro-magnetic motors and connections on said poise for moving thepoise along the beam in opposite directions, a contact device controlledby the movement of the beam for closing the circuit to one of saidmotors only when the beam is above its position of balance, a secondcontact device controlled by the movement of the beam for closing thecircuit to the other of said motors only when the beam is below itsposition of balance, a normally opened switch for opening and means forclosing said switch, an electromagnet and connections for opening saidswitch, and a contact device controlled by the movement of the beam forclosing the circuit to said magnet when the beam is in its balancedposition, substantially as described.

13. In a self-poising beam scale, the combination with the scale beam,of a poise movable along'the beam, a longitudinally extending rack onthe scale beam, driving mechanism carried by the poise comprising apinion 31 for engaging said rack, a wheel pinion is rotated, anelectro-magnet 35, an armature lever 41,-a pawl 37 carried by thearmature lever 41 in position to engage the periphery of the Wheel 39,and means for breaking the circuit to v oppositelyarrangedelectro-magnets 35 and as the armature moves toward the magnetso as to cause a rapid reciprocation of the armature'when the magnet isenergized, substantially as described.

14. In a self-poising beam scale, the combination with the scale beam,of a poise m0v-' able along the beam, a longitudinally extending rack onthe scale beam, driving mechanism carried by the poise comprising apinion 31 for engaging said rack, a wheel 39 through which the pinion isrotated, two

the magnet 'tively carried by Closing said circuits,

36, armature levers 41 for said magnets, pawls 37 and 38 respec-, tivelycarried by said armature levers for engaging the wheel 39 to rotate thesame in opposite directions, and means included in the circuits to saidmagnets for breaking the circuits as the armatures move toward themagnets whereby when either magnet is energized its armature will berapidly reciprocated, substantially as described.

15. In a self-Doising beam scale, the combination with the scale beam,movable along the beam, a longitudinally extending rack on .the scalebeam, driving mechanism carried by the poise comprising a pinion 31 forengaging said rack, a wheel and 42 respectively i of a poise 39 throughwhich the pinion is rotated, two

oppositely arranged electro-magnets 35 and 36, armature levers 41 forsaid magnets, pawls 37 and 38 respecsaid armature levers for engagingthe wheel 39 to rotate the same in opposite directions, and a stop plate40 against which said armatures are held in their normal or retractedposition under spring tension and by which the pawls are held normallyout of engagement with the wheel 39, substantially as described.

16. In a self-poising beam scale, the combination with a scale beamhaving a pair of and 42 respectively insulated supporting bars 19 and20, of a poise mounted on but insulated from said supporting bars tomove along the beam, two independent 'ectric motors on the poise formoving the poise in opposite directions on-the beam, two running contactdevices carried by the poise, one being in engagement' with each of thesupporting bars 19 and 20, connections for completing the circuit to oneof said electric motors through the supporting bar 19 and the contactdevice engaging said bar, and connections for completing the circuit tothe. other of said electric motors through the supporting bar 20 and thecontact device engaging said bar, substantially as described.

17. In a self-poising beam scale, the combination with the scale beam,of a poise movable along the beam, means for automatically moving thepoise to balancing position, means cont-rolled by the beam for making asignal when the beam comes to balancing position, and means forautomatically preventing operation of the signaling means after a signalhas been made and until the next Weighing operation, substantially asdescribed.

1 8. In a self-poising beam scale, the combination with the'scale beam,of a poise movable along the beam, an electric motor and connections formoving the poise along the beam, a contact device in the circuit to saidmotor controlled by the movement of the scale beam, a switch in saidcircuit, an electro-magnet and connections for opening said switch,means controlled by the movement of the scale beam for closing thecircuit to said magnet when the beam is balanced, a signaling deviceactuated by said magnet, and means for automatically opening the circuitto said magnet after said switch has been opened and the signal made,substantially as described.

In testimony whereof, I have hereunto WILLIAM W. ROSENFIIELD.

Witnesses;

A. L. KENT, T. F. KEHOE.

